Roof Curbs

Roof Curbs

Pate roof curbs create a water-tight transition between the interior and exterior of the building. Roof curbs will accommodate fans, ventilators, piping, duct work and plumbing penetrations. Curbs will also accommodate skylights and roof hatches. See our in-stock roof curbs here.

  • Heavy-gauge galvanized steel or aluminum construction, with integral base flange.
  • Continuously welded and mitered corners.
  • Larger sizes internally reinforced.  
  • Pressure-treated wood nailer with 1-1/2″ thick fiberglass insulation and simple flashing detail.
  • Sound attenuating galvanized steel panels with fiberglass insulation absorb up to 40% of ventilator noise, with air flow interference of only 4%. 
Product GroupDescription
PC-2 (Submittal PDF)Straight-sided curbs – most common – lightweight fill or tapered insulation 
PC-1 (Submittal PDF)Canted-design – 45-degree bend at base – single ply or rubber/PVC roof
PC-5 (Submittal PDF)Raised-cant design – 45-degree bend and elevated base – insulated roof deck
PC-2SF (Submittal PDF)Straight-sided curbs – extended base flange – pitched roofs 
PC-2SL (Submittal PDF)Straight-sided curbs – loose base flange – adjust in field for unknown pitched roof  
PC-2P (Submittal PDF)Straight-sided curbs for standard RTUs 
PC-4IL (Submittal PDF)Heavy duty, straight-sided curb, exterior insulation and liner – large HVAC units 
PSC-1,2,5 (Submittal PDF)Sound reduction curbs, available in 1, 2 and 5 styles
PC-2DHP (Submittal PDF)Straight-sided curbs with damper holding plate
PC-1DHP (Submittal PDF)Canted-design curbs with damper holding plate
PC-5DHP (Submittal PDF)Raised-cant curbs with damper holding plate